In this commit we order fields more logically to ease reading and prepare future modifications. We also rename the class and some field strings to be more user friendly. LINKS Prepares Task ID 2238597 (clean notification models) Prepares Task ID 2083854 (improve mass mailing technical flows) PR #49891 Co-Authored-By: Rémy Voet <ryv@odoo.com> Co-Authored-By: Thibault Delavallée <tde@odoo.com>